baber/WOPTO huggingface dataset:
Patent GB-941957-A (GB)
Title: Copolymer compositions containing siloxy and carbonate groups
IPC: C08G64/08
Filed: 1959-12-07
Abstract: Copolymers containing siloxy and carbonate linkages are the reaction product of (1) a dihydric phenol; (2) an organo dihalo-silane or an organo diaryloxy or dialkoxysilane and (3) an ester-forming derivative of carbonic acid.  The polymers may be prepared by effecting an ester-interchange reaction between (1) a dihydric phenol; (2) a diaryloxy or dialkoxysilane (e.g. dimethyldiphenoxysilane) and (3) a carbonate ester (e.g. diphenyl carbonate, using a vacuum cork melt polymerization technique. Alternatively they may be prepared by reacting together (1) a dihydric phenol; (2) a dihalosilane and (3) a dihalocarbonyl (especially phosgene) or a bis-chloroformate of a dihydric phenol (e.g. hydroquinone or bis-phenol A) or a glycol (e.g. ethylene glycol, neopentyl glycol or polyethylene glycol).  The latter reaction is effected in the presence of a tertiary amine (e.g. pyridine) and possibly an inert solvent. The reactants may be reacted simultaneously or reactants (1) and (2) or (1) and (3) may be first reacted followed by the addition of the third reactant. Examples describe the manufacture of copolymers by reacting bis-phenol A or tetrachloro-bis-phenol A, dimethyldichlorosilane and phosgene. Fillers, e.g. wood flour, diatomaceous earth, silica or carbon black may be added.  Uses-moulding powders, gaskets, tubing, films, electrical insulating and sound recording tapes, fibres, surface castings, shot insulation and adhesives.
Patent GB-856903-A (GB)
Title: Improvements in hand shears
IPC: A01G3/06
Filed: 1958-12-24
Abstract: 856,903. Hand shears. WALLACE, E. Dec. 24, 1958 [Dec. 30, 1957], No. 41770/58. Class 30 Grass shears comprise a fixed handle 8 rigid with a stationary blade 2, a movable blade 12 pivoted at 10 on the stationary blade and connected to a movable handle 22 by a pushing element 34 which operates with a forward and downward force at its connection at 40, between the blades, to the blade 12. The end 38 of the element bears on the blade 2 to limit downward movement and determine the transverse inclination of the blade 12 during cutting of resistant material and the blades are given the usual initial transverse inclination by pressure by a heel of the blade 12 sliding on the blade 2 and a compression spring 16. A stop 48 abuts the moving blade in open and closed positions.
Patent GB-1127237-A (GB)
Title: Heat developing diazo type compound
IPC: G03C1/61
Filed: 1965-10-05
Abstract: 1,127,237. Heat developable diazotype materials. ETABS BAUCHET & CIE S.A. Oct.5, 1965 [Oct.5, 1964], No.42204/65. Heading G2C. A heat-developable diazotype material comprises a support coated with a layer containing a diazonium compound, an azo coupler and an acid stabilizer and a developer composition comprising a first salt of a volatile ammonia or amine base with an acid and a second salt of a stronger base and a weaker acid, the salts being applied in separate coatings and releasing ammonia or an amine on heating. The salts are generally finely dispersed and one salt may be added to the light-sensitive layer. Specified first salts are ammonium nitrate, chloride, bromide, sulphate, silicofluoride, thiocyanate and paroxydisulphate and specified second salts are carbonates, bicarbonates, oxides, benzoates, borates and hydroxides of alkali metal and alkaline earths. In the examples, the light-sensitive material may be back-coated with a solution of the first salt optionally containing a binder and this is overcoated with a finely ground second salt in a binder. Alternatively, the first salt is added to the light-sensitive layer which is overcoated with a finely ground second salt in a binder. Dye images are produced on imagewise exposure and subsequent heating of the material.
Patent GB-1025847-A (GB)
Title: Improvements in suspension units for vehicles
Inventor: WILSON ALEXANDER JOHN
IPC: B60G17/044
Filed: 1962-11-10
Abstract: 1,025,847. Hydro-pneumatic suspension units. GIRLING Ltd. Oct. 17, 1963 [Nov. 10, 1962], No. 42571/62. Heading F2S. A hydro-pneumatic suspension unit for vehicles comprises a strut incorporating a space 13 containing air or other gas under pressure as a spring and a telescopic damping means in combination with an inertia damper comprising inertia member 19 which is movable axially in the strut to pump liquid from a reservoir into the pressure space to maintain the mean length of the strut at a predetermined value. In the construction shown, the inertia member 19 is mounted within the piston-rod 17 of a piston 16 and guided upon a hollow tubular spigot 22 depending from the piston 16. The bore of the spigot 22 is sealed at its upper end by a spring- loaded, one-way valve 25. The spigot 22 is also provided with radial ports 26 which are normally closed by the inertia member 19. On the downward movement of the member 19 in the piston-rod the axial recess 23 of the member is filled with hydraulic fluid which on the return movement is pumped through valve 25 after the ports 26 are covered. When the length of the strut becomes too great, a port 29 is uncovered by the piston 16 such that hydraulic fluid may pass back to the reservoir within and around the piston-rod through passage 32 and port 31. A flexible annular bag 33 of pressurized gas may be mounted within the reservoir and a domed resilient washer 34 is provided to cushion the impacts of the inertia member against the piston.
Patent GB-975296-A (GB)
Title: An improvement in plant for washing bulk material
IPC: B03B5/56
Filed: 1962-11-12
Abstract: 975,296. Washing granular materials. FREDERICK PARKER Ltd., and F. W. PARKER. Nov. 7, 1963 [Nov. 12, 1962], No. 42589/62. Heading B2H. A feed ring 5 for a rotary drum washer comprises a back plate 2 with a central aperture 23 and associated cylinder 7 for the admission of a water pipe 6, apertures 24 adjacent the aperture 23 being fed with the bulk material as collected by scoops 26 the portions of which adjacent the apertures 24 are of a shape, such as shown at 26a of Fig. 5, to direct the material through the apertures. Blades 27 over the apertures 24 project into the washing drum 1 to clear a path in front of the apertures. The bulk material is fed into the rim of the feed ring with water and deflector plates 37 guide the material into the mouths of the scoops 26. The washed material is fed to three concentric sieves 11, 12, 13, the latter of which feeds sand and water to a settling tank from which the sand is dredged by a bucket wheel 20.
Patent GB-1473989-A (GB)
Title: Rotary drive mechanism
IPC: B23Q5/40
Filed: 1975-10-20
Abstract: 1473989 Screw-and-nut mechanism BENDIX CORP 20 Oct 1975 [25 Nov 1974] 43008/75 Heading F2Q Movement of a ball nut 14 along a screw 16 is conveyed to a carriage 10 by a coupling comprising an intermediate block 22 and a pair of drive pins 28, 30, the pin 28 being secured to the carriage 10 and having a sliding connection with the block 22, the pin 30 being secured to the nut 14 and having a sliding connection with the block 22, and the pins 28, 30 being located at right-angles to each other and in a plane disposed at right-angles to the linear advance direction of the nut 14. The pins 28, 30 are carried by axially preloaded bearings 24, 26.
Patent GB-1268140-A (GB)
Title: A process for the continuous production of 1,4-dicyano-2-butene
Inventor: KURTZ PETER
IPC: C07C255/09
Filed: 1970-09-09
Abstract: 1,268,140. 1,4-Dicyano-2-butene. FARBENFABRIKEN BAYER A.G. 9 Sept., 1970 [25 Sept., 1969], No. 43083/70. Heading C2C. [Also in Division C1] 1,4-Dicyano-2-butene is produced in a continuous process comprising introducing continuously 1,4-dichloro-2-butene, 1,2-dichloro-3- butene or a mixture of the two into the first vessel of a cascade consisting of a plurality of vessels, introducing continuously an aqueous NaCN solution containing a copper (I) salt into each vessel of the cascade the introduction of the aqueous NaCN solution to each individual vessel being separately regulated to maintain a pH value of 3-4 in each vessel; removing continuously the resulting reaction mixture from the last vessel of the cascade on completion of the reaction and processing the reaction mixture in a conventional manner. Preferably the copper (I) salt is present in a quantity of 0À5-10% by weight of the solid NaCN.
Patent GB-1254033-A (GB)
Title: Nitrogen-free platinum, its preparation and application
Inventor: SHORT OLIVER ALTON
IPC: C22B11/00
Filed: 1969-08-29
Abstract: 1,254,033. Metal powders. E.I. DU PONT DE NEMOURS & CO. 29 Aug., 1969 [30 Aug., 1968], No. 43217/69. Heading E1K. [Also in Divisions B6 and C7] The invention relates to nitrogen free platinum powder having a surface area of 0.1-1 m<SP>2</SP>/gm preferably 0.2-0.6 m<SP>2</SP>/g. The powder may be prepared by precipitation from solution (see Division C7).
Patent GB-955838-A (GB)
Title: Improvements in or relating to starter circuits for the internal combustion engines of motor vehicles
Filed: 1960-12-15
Abstract: 955,838. Starting prime movers. FIAT S.p.A. Dec. 15, 1960 [Dec. 18, 1959], No. 43247/60. Heading H2H. In order to prevent the operation of an internal combustion engine starter motor M when the engine is running the circuit to the starter motor relay E is interrupted by the opening of the controls 5, 6, the latter being mounted on an armature 7 subjected to the fluxes in cores 2 and 3 respectively, the armature being biased towards the contact 5 and the windings 4, 11 being arranged so that with the engine stopped and the flow of current to the relay E from the battery B when the starter switch C shorts back its otherwise open contacts then the contacts 5, 6 are kept closed, but with the opening of the switch C, when the engine has started, the cessation of current thrusts the winding 4, and the build up of current through the winding 11 of the core 3 connected to the vehicle generator G, then the armature is attracted towards the core 3 and the contacts 5, 6 opened so that the circuit to relay E can not again be completed until the engine is stopped, the winding 11 de-energized and the contacts 5, 6 closed. The force exerted by core 2 on the armature 7 is such that while relay current flows through the winding 4, the core 3 is ineffective and thus armature movement towards core 3 can only take place when the switch C is opened, interrupting the current to winding 4. The switch C has three positions, thus all contacts open, both contacts closed, one contact closed; and it is arranged that from the initial " off" position, the second position closes both contacts and when the switch C is released and the engine has started, then one switch contact remains closed. The battery B is connected to the winding 11 through a resistor 14 so that when the switch C is in its second or third positions, then core 3 will exert an attracting force on the armature which will be independent of the generator desired current which may initially be low, due to the engine running only more slowly, or because the generator's own excitation current has not built up to its usual magnitude.
Patent GB-1116211-A (GB)
Title: Oxidation of butane
Inventor: EMANUEL NIKOLAI MARKOVICH
IPC: C07C45/33
Filed: 1963-11-05
Abstract: n-Butane is continuously oxidized in the gaseous phase with oxygen at a temperature above 152 DEG  C. and at a pressure between 50 and 100 atmospheres gauge to give oxygen-containing compounds, the liquid products collecting in the reaction zone in the form of a bottom layer containing water.  Specified organic products are acetic acid, formic acid, acetone, methyl ethyl ketone, acetaldehyde, methanol, ethanol, butanol, methyl acetate, ethyl acetate and butyl acetate.
Patent GB-962170-A (GB)
Title: A high resistance squirrel cage rotor
IPC: H02K17/16
Filed: 1960-12-21
Abstract: 962,170. Casting composite articles. GENERAL ELECTRIC CO. Dec. 21, 1960 [Dec. 29, 1959], No. 43893/60. Heading B3F. [Also in Division H2] In a high-resistance squirrel cage rotor having cast conductor bars which zig-zag between positions 44, 48 adjacent the inner and outer peripheries of the rotor core, the necessary longitudinal rigidity to prevent separation of the laminations is achieved by axially staggering alternate bars round the rotor so that an outward portion 44 of one bar is adjacent inward portions 48 of bars on each side to produce a bonding or interlocking action. Thus for example the gap 60 is prevented from opening by sections 54 of adjacent conductors. The zig-zags are produced by the use of stacks of laminaµ with rings of mutually staggered slots near the outer periphery and near the shaft, spaced by stacks of laminµ having slots deep enough to link them. The lengths of the inner and outer portions of the winding need not be the same throughout the length of the rotor.
Patent GB-1127638-A (GB)
Title: Method of producing mouldings of polyvinyl alcohol synthetic resins
IPC: C08F8/00
Filed: 1966-10-03
Abstract: 1,127,638. Mouldings of modified polyvinyl alcohols. KURASHIKI RAYON K.K. 3 Oct., 1966 [2 Oct., 1965; 11 Oct., 1965], No. 43981/66. Heading C3P. Filaments, yarns, films and other mouldings of polyvinyl alcohol synthetic resins are prepared by moulding a modified polyvinyl alcohol containing from 1 to 15 mole per cent of units having side chains containing long-chain alkyl groups having from 4 to 20 carbon atoms. The resins may be extruded in the absence or presence of a plasticizer. In the Examples (1) vinyl acetate and lauryl vinyl ether are copolymerized in the presence of α,α<SP>1</SP>-azobisisobutyronitrile and methanol, further solvent and catalyst being added during polymerization, and the resultant copolymer is saponified. The modified polyvinyl alcohol is extruded in the presence of magnesium sulphate, glycerine, trimethylol propane, or diethylene glycol. The lauryl vinyl ether may be replaced by stearyl vinyl ether. In Example (6) a polymer obtained by acetalizing polyvinyl alcohol with lauryl aldehyde in the presence of a sulphuric acid catalyst is used. In Example (7) vinyl formate and vinyl stearate are copolymerized and saponified as in (1) and extruded in the presence of glycerine. In Example (8) the polymer of (1) is extruded in the presence of calcium carbonate and trimethylol propane.
Patent GB-1015791-A (GB)
Title: Protein derivatives
Inventor: VRANCKEN MARCEL NICOLAS
IPC: D06M15/15
Filed: 1960-12-22
Abstract: A protein derivative comprises a reaction product of a protein such as gelatin, casein or soya-bean protein with benzoyl bromide or an aromatic halide having the general formula <FORM:1015791/C3/1> in which formula X represents a halogen atom, R1 represents an organic radical comprising at least one substituted or unsubstituted aromatic nucleus substituted by one or more of the following groups, namely a halogen atom, an alkyl group, an acyl group and/or a nitro group, and R2 and R3 (the same or different) each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, or an organic radical comprising at least one substituted or unsubstituted aromatic nucleus.  The aromatic halide may be benzyl bromide or chloride, m- or p-methylbenzylbromide, pnitrobenzyl bromide or chloride, 2-bromo-3nitrobenzylbromide, diphenyldichloromethane, diphenylbromomethane, phenylbenzoylbromomethane, naphthylbromomethane, benzoylbromomethane or 1 - phenyl - 2 - bromoethane.
Patent GB-1115290-A (GB)
Title: Fluorescent phosphor composition
IPC: C09K11/77
Filed: 1966-10-04
Abstract: A luminescent material comprises strontium fluoroborate activated by europium preferably of the general formula <FORM:1115290/C4-C5/1> This phosphor, with a broad U.V. excitation spectrum from about 2500 <\>rA to 3500 <\>rA with maximum about 3000 <\>rA has a narrow emission peak at about 3700 <\>rA and may be used in low-pressure mercury lamps for instance.  In a method of preparation fine powders strontium nitrate, europium oxide and boric acid are dissolved in water at 80 DEG  C. in the molecular proportions 0.5 Sr (NO3)2: 4H3BO3: 0.006Eu2O3. The slurry resulting from the addition of 1:1 mixture of acetone and ammonium hydroxide is cooled to below 20 DEG C., filtered and dried. 0.250 moles of SrF2 is thoroughly mixed with the precipitate and fired at 800 DEG  C. for 40 mins. in an open quartz crucible in air or light oxidizing conditions followed by thorough mixing of 0.238 moles of SrF2 and firing at 890 DEG  C. in an open quartz crucible under mild reducing conditions, for instance 10-20% hydrogen in nitrogen.  Reference is made to the phosphor barium magnesium zinc calcium orthosilicate activated by lead and arsenic.
Patent GB-1400351-A (GB)
Title: Ground engaging tip
IPC: E02F9/28
Filed: 1973-09-21
Abstract: 1400351 Ground-engaging tooth assembly CATERPILLAR TRACTOR CO 21 Sept 1973 [29 Sept 1972] 44387/73 Heading E1F A replaceable ground-engaging tip 14 for mounting on an adapter 10 on the cutting edge of an excavating bucket has a wedge shaped body comprising the wear part of the tip and rearwardly extending straps 18, 20 at the top and bottom of the body. The straps diverge from the body to form an open-sided generally U-shaped opening 16 for the reception of the nose 17 of the adapter. Each strap has a key 22, 24, which extends laterally of the strap near the rear end of the strap. The keys project normal to the straps and engage respective keyways 26, 28 in the adapter. All loads on the tip are transferred to the adapter through the keys and keyways. The loads on the tip are transmitted through the straps in tension compression rather than in bending so that the straps can be made of quite thin sections. The tip is self locking on the adapter because of the friction produced between the keys and keyways. The keys may face inwards or outwards and a locking means 30 may also be provided between the tip and an associated adapter to prevent side ways movement of the tip along the adapter.
Patent GB-872262-A (GB)
Title: Improvements in and relating to carriage guides for mutually longitudinally movable machine components
IPC: B23Q1/40
Filed: 1959-12-31
Abstract: 872,262. Machine-tool details. SCHNEEBERGER A.G., W. Dec. 31, 1959 [Dec. 3, 1959], No. 44389/59. Class 83 (3). A guide arrangement for a machine carriage 2 includes the use of identical guide-strips 4 which are mutually interchangeable. The guide strips are provided with threaded and countersunk bores 41 for securing to the carriage 2 and bed 1 and V-grooves are provided in the side-faces to carry rollers or balls 3a, 3b respectively. The strips may be secured from outside the frame and carriage members with means for adjustment as on the left of Fig. 1, or, they may be secured by the countersunk portion with short screws as on the right of Fig. 1.
Patent GB-891427-A (GB)
Title: Improvements in or relating to waveguide arrangements including elements of ferromagnetic ceramic material
Inventor: EGLETON JOHN EDWARD
IPC: H01P1/175
Filed: 1959-12-31
Abstract: 891,427. Radio signalling. GENERAL ELECTRIC CO. Ltd. Jan. 2, 1961 [Dec. 31, 1959], No. 44495/59. Class 40(5). [Also in Group XL(b)] The polarization of a guided wave is switched rapidly between two planes at rightangles to each other. The switching is performed by a Faraday rotator comprising a waveguide section formed from a dielectric member 4 and a conductive winding 9, the winding 9 being surrounded by a further winding 16 for providing an axial field within a ferrite element 1. Square pulses at the desired switching frequency are applied to the winding 16. In order to prevent mutual inductance between the two windings, winding 9 is divided into two sections extending from the centre of the dielectric member and' wound in opposite senses. The ends of the winding surround the enlarged end portions 5, 6 of the dielectric member and make electrical contact with the walls of a tubular waveguide 3 which provides the input and output of the device. The leads 17 of winding 16 extend through the wall of waveguide 3 at right-angles to the plane of polarization of the input waves.
Patent GB-1018665-A (GB)
Title: Dentifrices
IPC: A61K8/21
Filed: 1962-11-28
Abstract: Dentifrices comprise a polishing agent, a water-soluble fluorine-containing compound which yields fluoride ions in aqueous solution and a buffering agent, such that when the pH of a slurry of the dentifrice is measured under the conditions hereinafter defined the pH is from 5 to 6.  (The said pH is measured at 25 DEG C for a slurry of one part by weight of the dentifrice and three parts by weight of an aqueous solution comprising 1.01 g/litre of sodium bicarbonate and 0.71 g/litre of disodium orthophosphate, said aqueous solution being adjusted to pH 7.8 with N hydrochloric acid). Polishing agents specified are silica, a hydrated alumina-silica mixture, calcium pyrophosphate and mixtures of water-insoluble sodium metaphosphate with calcium pyrophosphate, dicalcium orthophosphate, silica or alumina; synthetic organic polymers (unspecified) may also be used.  Specified fluorine compounds are sodium, potassium, lithium, ammonium, germanium, aluminium and stannous fluorides and stannous chloro-fluoride. Suitable buffering agents include the mixtures NaH2PO4/Na2HPO4, acetic acid/sodium acetate, malic acid/sodium malate and sorbic acid/sodium sorbate. A germicide may be included in the dentifrice, e.g. 2, 21-methylene-bis (3, 4, 6-trichlorophenol), 3, 41, 5-tribromosalicylanilide and 3, 4, 41-trichlorocarbanilide.
Patent GB-1092319-A (GB)
Title: Rotary drum device for the treatment of air-permeable web material
IPC: F26B13/16
Filed: 1965-10-25
Abstract: 1,092,319. Textile treating apparatus. H. FLEISSNER; H. FLEISSNER and G. FLEISSNER [trading as ANSTALT FUER PATENTDIENST], Oct. 25, 1965 [Dec. 21, 1964], No. 45027/65. Heading D1L. [Also in Division F4] A sieve drum for treating air permeable webs comprises a drum 2 of large diameter, e.g. at least 2 m., in which the partial vacuum is achieved by several fans 7 arranged in a common fan chamber separated from the treatment chamber by a wall 5 at one or both sides of the drum and being distributed at or near the circumference of the drum jacket. Openings 6 in the wall 5 allow for exhaust of the drum and the air is circulated over heaters 11 above and at the sides of the fans. The drum jacket is formed of perforated sheets or wire mesh held on arcuate rings 15 of adjustable diameter, and by spokes 12 of adjustable length. The drum is mounted on adjustable stays 18 and is rotatable in either direction as is a feed and discharge conveyor belt 4. The fans and motors thereof are movable as units into and out of the fan chamber.